Python os.lchflags() Method

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Description

The method lchflags() sets the flags of path to the numeric flags. This method does not follow symbolic links unlike chflags() method.

Here, flags may take a combination (bitwise OR) of the following values (as defined in the stat module):

  • UF_NODUMP: Do not dump the file.

  • UF_IMMUTABLE: The file may not be changed.

  • UF_APPEND: The file may only be appended to.

  • UF_NOUNLINK: The file may not be renamed or deleted.

  • UF_OPAQUE: The directory is opaque when viewed through a union stack.

  • SF_ARCHIVED: The file may be archived.

  • SF_IMMUTABLE: The file may not be changed.

  • SF_APPEND: The file may only be appended to.

  • SF_NOUNLINK: The file may not be renamed or deleted.

  • SF_SNAPSHOT: The file is a snapshot file.

Note: This method has been introduced in Python 2.6

Syntax

Following is the syntax for lchflags() method:

os.lchflags(path, flags)

Parameters

  • path -- This is the file path for which flags to be set.

  • flags -- This could be a combination (bitwise OR) of the above defined flags values.

Return Value

This method does not return any value.

Example

The following example shows the usage of lchflags() method.

#!/usr/bin/python

import os, sys

# Open a file
path = "/var/www/html/foo.txt"
fd = os.open( path, os.O_RDWR|os.O_CREAT )

# Close opened file
os.close( fd )

# Now change the file flag.
ret = os.lchflags(path, os.UF_IMMUTABLE )

print "Changed file flag successfully!!"

When we run above program, it produces following result:

Changed file flag successfully!!



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